🐧 Optimized Marineland 12-Pack Penguin Rite A-Size Water Filter Cartridge Review

Works well. The water was beautiful and clear. When changing the filter, I cut the filter element off the old one and stick it behind the new one to preserve the beneficial bacteria as much as possible. My tank circuit seems to be in good condition.

I have a 20G aquarium and they keep it extremely clean. I would recommend buying them (rather than a box) to save money. Like toilet paper, you will end up using it all. So why not save now?

I bought a cheap 10 gallon tank to save some 'life fish' and they still seem to be loving their forever homes. The aquarium was cheap, the filter was cheap, the lamp was cheap, but everything worked. I might throw in too much food that will clog the filter within a week, but I've never seen fish eat! Usually the fish will jump to the surface and snatch whatever falls into the tank, but these guys just watch as the food tumbles past their snouts.